noun, noun which may take the genitive case particle 'no'
Refers to the hard outer covering of crustaceans, insects, or other arthropods. Often used in biological contexts.
カニの甲殻はとても硬い。
A crab's shell is very hard.
甲殻類にはエビやカニが含まれる。
Crustaceans include shrimp and crabs.